منابع مشابه
Reducing Uncertainty in Prediction of Dune Erosion during Extreme Conditions
Coastal dunes protect low lying coastal areas against the sea. Extreme waves and water levels during severe storms may cause breaching of the dunes. Consequently, serious damage due to flooding and direct wave attack could occur, resulting in loss of life and property. Proper coastal management implies that reinforcement measures will be taken if the actual safety level does not meet the agreed...
متن کاملAmplified erosion above waterfalls and oversteepened bedrock reaches
, where E(x=La) is the erosion rate at the upstream end of the flow acceleration zone above a waterfall, Fr is the Froude number at this setting, and n ranges between 0.5–1.7. This amplification expression suggests that erosion at the lip could be as much as 2–5 times higher relative to erosion at a normal setting with identical hydraulic geometry. Utilizing this erosion amplification expressio...
متن کاملThe role of bathymetry, wave obliquity and coastal curvature in dune erosion prediction
Low lying coastal areas have always been attractive for people to live, but are also prone to flooding. In The Netherlands, half of the population lives in the coastal area below mean sea level where two-thirds of the economic value is located. Coastal dunes protect the hinterland from flooding as a primary sea defence along the major part of the Dutch coastline. The envisaged protection level ...
متن کاملExtending DUNE: The dune-xt modules
We present our effort to extend and complement the core modules of the Distributed and Unified Numerics Environment DUNE (http://dune-project.org) by a well tested and structured collection of utilities and concepts. We describe key elements of our four modules dune-xt-common, dune-xt-grid, dune-xt-la and dune-xt-functions, which aim at further enabling the programming of generic algorithms wit...
متن کاملERDC/CHL TR-12-16 "Lake Michigan: Prediction of Sand Beach and Dune Erosion for Flood Hazard Assessment"
The present recommendations for dune removal or dune retreat on the Great Lakes for Federal Emergency Management Agency (FEMA) flood mapping purposes are based on a simple geometric method as outlined in FEMA (2009). The simple procedure establishes a relationship between dune survival and storm intensity. The method was adopted several decades ago when numerical models were inadequate for pred...
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ژورنال
عنوان ژورنال: Coastal Engineering Proceedings
سال: 2012
ISSN: 2156-1028,0589-087X
DOI: 10.9753/icce.v33.sediment.95